Pull-through tubing string rotator for an oil well

Details Pull-through tubing string rotator for an oil well Pull-through tubing string rotator for an oil well

E - Fixed Constructions

21

B

E21B 23/00 (2006.01) E21B 33/04 (2006.01)

Patent

CA 2296975

An apparatus for rotating a tubing string within an oil well. The apparatus includes an outer housing having an upper end, a lower end and a generally hollow interior where the lower end may be used to attach the outer housing to the casing bowl of an oil well. The apparatus further includes a drive assembly and a tubing string hanger generally disposed within the interior of the outer housing. The drive assembly has a generally hollow rotating gear mandrel and a drive gear. The tubing string hanger has a lower end for attaching to and supporting a tubing string. The tubing string hanger engages the rotating gear mandrel such that rotation of the rotating gear mandrel causes rotation of the tubing string hanger. The tubing string hanger, and a tubing string attached thereto, may be withdrawn from the oil well and through the outer housing without withdrawal of the rotating gear mandrel or the drive gear.

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